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    <title>Document</title>
    <script>
        var money = prompt("猜猜班长有多少钱，请大家吃饭。");

        if (money >= 2000) {
            alert("班长请大家吃西餐");
        }
        else if (money >= 1500) {
            alert("班长请大家吃餐");
        }
        else if (money >= 1000) {
            alert("班长请大家喝饮料");
        }
        else if (money >= 500) {
            alert("班长请大家吃棒棒糖")
        }
        else{
            alert("提醒班长下次把钱带够")
        }

    </script>
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